I loved this episode! I completely agree with all your thoughts on Chloe and Clark, and I'm really excited about this turn of events - like you, I found myself warming up to Chloe again, and by the end of the episode I kind of adored her. :)

As for Clark making the decision to take her memories away from her, it came from a place of pure selflessness, not from a place of arrogance, so I totally give him a pass. ♥